Portion of a speaker housing



FIG. 1 is a pespective view of a portion of a speaker housing showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof, the opposite side elevational view being a mirror image thereof; and,

FIG. 4 is a back elevational view thereof.

The broken line showing of the speaker housing and cord in FIGS. 1-4 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portion of a speaker housing, as shown and described. 